Selected Balance Sheet Information (Tables)

3 Months Ended

Mar. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Other Current Assets [Table Text Block]

Prepaid expenses and other current assets (in thousands)

	March 31,		December 31,
	2017		2016
Prepaid clinical research organizations expense	$	2,224	$	1,677
Prepaid travel and conference expenses		397		295
Prepaid manufacturing expenses		330		-
Prepaid insurances		240		358
Other current assets		175		185
Total	$	3,366	$	2,515

Property, Plant and Equipment [Table Text Block]

Property and equipment, net (in thousands)

	March 31,		December 31,
	2017		2016
Computer and office equipment	$	652	$	641
Leasehold improvements		439		439
Software		11		11
		1,102		1,091
Less accumulated depreciation and amortization		(243)		(186)
Total	$	859	$	905

Accrued Expenses [Table Text Block]

Accrued expenses (in thousands)

	March 31,		December 31,
	2017		2016
Accrued clinical consulting services	$	1,812	$	2,211
Accrued vendor payments		280		400
Accrued manufacturing expense		38		14
Other accrued expenses		4		2
Total	$	2,134	$	2,627

Accrued Employee Benefits [Table Text Block]

Accrued employee benefits (in thousands)

	March 31,		December 31,
	2017		2016
Accrued bonus expense	$	446	$	-
Accrued vacation expense		341		261
Other accrued employee benefits		-		52
Total	$	787	$	313